Rollers are made from a tough, low friction polymer Set includes 2 Side Sliders? for independent rear suspensions and 2 spacers to re-level your setup Single SideSlider? systems available - (PN 72870) Use on any smooth floor surface SideSlider? dimensions - 15-1/4" wide x 18" long x 1/2" tall Spacer dimensions - 15" x 15" x 1/2"
